664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34

General

Target

664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
Size

938KB
MD5

451a16a85434ed59c9000c5e8e8b1c50
SHA1

b85cb2a47bea248cea8b6969c7f4a06ad4405352
SHA256

664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34
SHA512

e24b8adde9c33fab57fede1cccee3c9022f5e9a9e637f8cb990eb95e1fcc29c631d021939afc6513550fa47c88d3f44713f98f5bbc91acba6837357a0eafc793
SSDEEP

24576:v6Zv2ivhBVnFys7xP86LkRCwPYfuukvDtiflQRg:vE2ivhQs7dLkRumsH

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CA8024B0-8B9A-11D5-EBA1-F78EEEEEE983}	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{CA8024B0-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "mskta32.exe"	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\mskta32.exe	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
File created	C:\Windows\SysWOW64\concp32.exe	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
File created	C:\Windows\SysWOW64\vcl32.exe	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
File created	C:\Windows\SysWOW64\mskta32.exe	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3684-0-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral2/files/0x0007000000023cb2-5.dat	upx
behavioral2/memory/3684-7-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3708	3684	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA8024B0-8B9A-11D5-EBA1-F78EEEEEE983}	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA8024B0-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA8024B0-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CA8024B0-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 74beb6c84c5c59a6b12cd057436bacba	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3684	664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe

C:\Users\Admin\AppData\Local\Temp\664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe
"C:\Users\Admin\AppData\Local\Temp\664a737c4401f5c45fe541088551335214e71bdd5fbbd887b1c6ccdde443fc34N.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
PID:3684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3684 -s 712
  2⤵
  - Program crash
  PID:3708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3684 -ip 3684
1⤵
PID:112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Event Triggered Execution

1

T1546

Change Default File Association

1

T1546.001

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\concp32.exe

Filesize
947KB

MD5
654ebd825d11f46ed93e9c6860f47123

SHA1
1c1e8bc25ea4dad2ddceced6ec991d7646703b06

SHA256
c6567ace95a2fc0e1a49486a5845585ac68a55792a694189b52a510614e3a220

SHA512
2de1253f519f52d7399a8dc192458e3e081490331e3ab0b0c2338565ae6a4beae6d2ff9daee414a6484e7659f5b50900996be01c04ae29efb5040cf9e8490b0b

Download Submit
memory/3684-0-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/3684-7-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads